function addUser() {
    let username = $("#username").val();
    let password = $("#psd").val();
    let obj = {
        username: username,
        password: password
    }

    $.ajax({
        type: "post",
        url: "/js/addUser",
        data: JSON.stringify(obj),
        dataType: "json",
        success: function(data) {
            if (data) {
                alert("添加成功")
            } else {
                alert("用户名已存在")
            }
        }

    })
}

// 登录
function login() {
    let username = $("#username").val();
    let password = $("#psd").val();
    let obj = {
            username: username,
            password: password
        }
        //设置cookie失效时长
    let date = new Date();
    date.setTime(date.getTime() + 60 * 1000);
    //判断用户是否选择了保持登录状态
    let checkbool = document.querySelector("#check").checked;
    if (checkbool) {
        //如果用户保持了登录状态  把username保持到cookie里面并设置有效时长
        document.cookie = "username=" + username + ";expires=" + date.toUTCString();
    } else {
        document.cookie = "username=" + username;
    }



    $.ajax({
        type: "post",
        url: "/js/login",
        data: JSON.stringify(obj),
        dataType: "json",
        success: function(data) {
            if (data) {
                location.href = "./01-首页.html"
            } else {
                alert("账号密码错误")
            }
        }
    })
}